Tooth-brush.



J. F. FOUYBR TOOTH-BRUSH.

APPLICATION FILED 0GT.14,1913.

Patented Mar. 16, 1915.

Suva/Moo cleaned perfectly and rationally,

JOSEPH FERDINAND FOUYER. OF MABSEILLE, FRANCE TOOTH-BRUSH.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filed October 14, 1913. Serial No. 795.052.

To all whom it may concern:

Be it known that I, JOSEPH FERDINAND FOUYER, a citizen of the Republicof France, residing at 156 Rue de Paradis, Marseille, Bouches-du-Rhfine,in the Republic of France, have invented certain new and usefulImprovements in Tooth-Brushes, of which the following is a full, clear,and exact description.

The present invention relates to a new tooth brush, and the specialarrangement of the bristles of which enable the teeth to be not only onthe outer surface, but particularly on the inner surface.

The annexed drawing illustrates by way of example this new type ofbrush, the dimensions of which may vary accordingly as it is to be usedby adults or by children.

Figure 1 is a side view. Fig. 2 is a front view. Fig. 3 is a front viewof the bent part of the end of the brush, intended to show thearrangement of the clusters of bristles. Fig. 4 is a-"plan of this bentend seen from the..line"1-1 in Fig. 1.

The form of the handle a enables the brush to be firmly held without itsbeing able to slip between the fingers. The end b is slightly curved inso as to move the lips slightly apart and to enable the brush to beapplied easily to the jugal faces of the incisor, canine, premolar andlarge molar teeth and to brush them thoroughly. The face of this end I)carries clusters of bristles c 0, arranged in a special manner, as shownin Fig. 2. This arrangement of the bristles is very important as itenables particles of food and the tartar that may lodge between theclusters of bristles to be removed in any direction. The cleaning of thebrush is then effected easily by means of running water which removesall these particles.

This arrangement has another appreciable advantage which is that ofenabling the bristles of the brush to dry almost immediately. The otherend e of the handle of the brush is considerably bent and termi' natesin a convex piece f on which clusters of bristles g g are arranged inthe same manner as for the end I). This end 6 is intended to prevent thehandle of the brush from rubbing the triturating surface of the teethduring the cleaning. This has an appreciable advantage because thewearing of the enamel which is a cause of caries, and sensitiveness ofthe dental tissue, is thus avoided. Moreover, the bending of the piece 7has likewise an important advantage as this form enables the brush to beperfectly applied to the back face of the lower jaw. The brushing ofthis essential part of the teeth can thus be effected in a normal andrational manner without the mouth being opened too wide and withoutaffecting the triturating face of the teeth. The form of this piece andthe arrangement of its bristles enables the teeth to be brushed on alltheir interior faces, where the tartar is particularly sheltered by thetongue and where the saliva constantly stays which is one of theprincipal causes of the formation of tartar.

The handle of this brush may be made of metal, aluminium, nickel,silver, gold, etc, or of any material whatever, wood, horn, bone, ivory.

Having thus described my invention what I claim is:

In a tooth brush having a suitable handle, bristles arranged in spaced,compact clusters, said clusters being arranged to form two spaced,crescent shaped groups whose concave sides face but do not touch eachother and a double convex pointed group, there being one crescent shapedgroup on each side of, and facing said double convex pointed group, saidgrouping being repeated as desired.

In testimony whereof I aflix my signature in the presence of twowitnesses.

JOSEPH FERDINAND FOUYER.

Witnesses BENJAMIN GoUrAL, AL'roN MACFARLANE.

